Added missing package data

Signed-off-by: Jim Martens <github@2martens.de>

setup.py

@@ -32,6 +32,9 @@ setup(
     namespace_packages=["twomartens"],
     packages=find_packages('src', exclude=["*.tests", "*.tests.*", "tests.*", "tests"]),
     package_dir={'': 'src'},
+    package_data={
+        'twomartens.calendarsync': ['event_template.markdown'],
+    },
     entry_points={
         "console_scripts": ['tm-calendarsync = twomartens.calendarsync.calendarsync:main']
     },